Home / 20,409,768.65-28,165,482.27-11,242,411.40

Finding the Fourth Proportional to 20,409,768.65, 28,165,482.27 and 11,242,411.40

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Solution

The fourth proportional to 20,409,768.65, 28,165,482.27 and 11,242,411.40 is: 15,514,528.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409,768.65 : 28,165,482.27 = 11,242,411.40 : x
  2. Step 2: Convert to fraction form
    20,409,768.65/28,165,482.27 = 11,242,411.40/x
  3. Step 3: Cross multiply
    20,409,768.65x = 28,165,482.27 × 11,242,411.40
  4. Step 4: Simplify right side
    20,409,768.65x = 316,647,938,817,918.44
  5. Step 5: Solve for x
    x = 316,647,938,817,918.44/20,409,768.65
  6. Step 6: Final answer
    x = 15,514,528.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.